5 inch high quality step drag bit 127mm

5 inch high quality step drag bit 127mm

4 wings step drag bits are one piece construction of alloy steel cast with tungsten carbide cutting tips and gauge sides to ensure longer life.

It has4 wings and 4 flushing holes. 4 wings step drag bits, are more durable and lasting than 3 wings step drag bits,

because of cutting structure, but will penetrate more slowly. 4 wing step drag bits are more stable and tend toward drilling a straighter hole,

as its 4 wings have more stable structure and do not make a deviation in the drilling.

 

4 wings step drag bits are economical tools when drilling softer geological formations and shallower depths,

they are primarilydesigned for soft tomedium formations, such as Clay, Loam, Silt ,Mostsoft-to-medium soilsthat have some moisture, etc.

And also step drag bits are recommended for drilling in Mining, Exploration, Environmental, Water well, Geo Exchange, etc.

 

 

4 wings step drag bits
Diameter		Thread
6 1/2 to 17 1/2 inch	165.1 to 444.5mm	Optional

Note: The diameter and thread showed as above are usual size, other sizes are available upon request.

Thread size: 2 3/8'' API Reg, 2 7/8'' API Reg, 3 1/2'' API Reg, 4 1/2'' API Reg, 6 5/8'' API Reg, 2'' API IF, 2 3/8'' API IF, 2 7/8'' API IF, A Rod, N Rod, AW, BW, NW, AWJ, BWJ, NWJ.